function Remplace(expr,a,b) {
		var i=0
		while (i!=-1) {
		 i=expr.indexOf(a,i);
		 if (i>=0) {
		    expr=expr.substring(0,i)+b+expr.substring(i+a.length);
		    i+=b.length;
		 }
		}
		return expr
	}
	

function setDesignMode(){
	var url=document.location.href;
	var designExist=0;
	if(url.indexOf('designMode')!=-1){
	designExist=1;
	}	
		if(document.getElementById('designMode').checked){
			if(designExist==0){
				self.location=url+'&designMode=Y';
			}else if(designExist==1){
				url=Remplace(url,'designMode=N','designMode=Y');
				self.location=url;
			}
		}else{
			if(designExist==0){
				self.location=url+'&designMode=N';
			}else if(designExist==1){
				url=Remplace(url,'designMode=Y','designMode=N');
				self.location=url;
			}
		}
}

function eraseTxt (inputName) 
{ inputName.value="";
}